Chapter 1 Flashcards
(19 cards)
The _________ is the basic structural unit of all living things.
cell
A population can be defined as:
groups of different species interacting in a particular area
True or False: A hypothesis can be proven true
f
The scientific method always begins with:
observations
What group of organisms serve as a source of nutrients and energy for most other organisms?
plants
The biosphere is composed of:
all of the ecosystems on Earth
Biology can be defined as:
the scientific study of life
The scientific method consists of four steps; observations, ______________, testing, and conclusions.
hypotheses
Which one of the following is NOT one of the characteristics of living things?
ability to infect other living organisms
All living things require _________ and ____________ for survival.
energy and nutrients
The broadest category of classification of living things is known as a:
Domain
Coli is a member of the Domain____________.
Bacteria
Archaea and Bacteria are different in that:
Archaea live in harsher environments than Bacteria
____________ is a characteristic used to divide the members of the Domain Eukarya into four Kingdoms.
how they acquire food
A colony of fire ants can be described using what term, based on how the colony functions?
a superorganism
A mechanism by which evolution occurs is known as:
natural selection
Which one of the following is one of the basic tenets of evolution?
all organisms are descended from former forms of life
What are the two ways in which living things interact with the physical environment?
energy flow and chemical cycling
What two key ecosystems on the planet are most threatened by human activities?
tropical forests and coral reefs
